Composition of matter to be used as a flexible covering.



UNITED STATES PATENT OFFICE.

FREDERICK M. RUSCHHAUPT, OF MILWAUKEE, WISCONSIN, ASSIGNOR T0 AMERICAN FLEXIBLE SLATE AND COVERING CO., OF MILWAUKEE, WISCONSIN, A CORPORA- TI'ON.

3 COMPOSITION OF MATTER TO BE USED AS A FLEXIBLE COVERING.

No Drawing.

To all whom it may concern:

Be it known that I, FREDERICK M. RUscH- HAUP'I, a citizen of the United States, and a resident of Milwaukee, in the county of Milwaukee and State of Visconsin, have invented a new and useful Composition of Matter to be Used as a Flexible Covering, of which the following is a specification.

This invention relates to a covering mate" rial adapted to serve as a substitute for slates, tiles and other forms of waterand acid-proof coverings and linings.

An object of my invention is to provide a flexible covering il'HPQI'VlOUS to acids and alkalis, of a water-proof and air-proof material for use as a roof covering or in any locality where such a covering or lining is desired. I attain this object by combining t-ertain substances enumerated hereinafter or by combining well-known physical and chemical equivalents of the same in the form of sheets, or slates, or, if desired, by combining any combination of the hereinafter enumerated substances with any preferred form of reinforcing substance, in order to strengthen the same. Preferably, I mold the substance intothe reinforced structure described in full in my Patent No. 761,788, granted June 7, 1904.

The ingredients and proportions of my improved covering are preferably as folows:

Coal tar pitch 18 pounds Coal tar 9pounds Gum asphalt 7 pounds Asphaltic tar or oil 4pounds Ash, preferably from anthracite coal 40 pounds Sand n, 10 pounds Portland cement"; Spounds Fiber, of either an organic or inorganic fibrous substance but preferably asbestos fiber 3 pounds Alum, or aluminum sulfate or ammoniunrsulfate 3 pounds The above-outlined ingredients or their equivalents are thoroughly mingled by proper'agitation While subjected to a heat Specification of Letters Patent.

Patented Jan. 28, 1913.

Application filed February 25, 1911. Serial No. 610,850.

of 250 degrees Fahrenheit or less and the mass thus formed is directed, when it has assumed a uniform color and state, into a brick press in which it is compressed into any desired thickness and shape, after which, if desired, it may be passed through heavy polishing rollers, as described in the aforementioned patent.

As outlined above, the asphalt and coal tar pitch are liquefied by the heat, which imparts to the composition considerable plastii'ity. Should a greater hardness be desired, the proportions of the gum asphalt and coal tar pitch are increased and a corresponding decrease made in the proportions of the semi-liquid tars,

W'hen there is no objection to the odor of the coal tar pitch and coal tar as a binding material in the composition above set forth, the following proportions of these substances may be used:

Coal tar pitch 25 pounds Coal tar 13 pounds together with the sixty-two per cent. of the ash, sand, cement, fiber and aluminum salts in the proportions stated above. In place of this binding agent, the gum asphalt and asphaltic tar as elements of the above set forth composition, may be used in the same proportions as has been enumerated for the coal tar pitch and coal tar binder.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

The herein-described composition of matter, consisting of coal tar pitch, eighteen pounds, coal tar, nine pounds, gum asphalt, seven pounds, asphalt-i0 tar, four pounds, ash, forty pounds, sand, ten pounds, cement, six pounds, fiber, three pounds and alum, three pounds.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERICK M. RUSCHHAUPT.

Witnesses:

OSCAR Amrn'rna, EDWIN J. Gnoss. 

